US2109984A - Electric discharge device - Google Patents
Electric discharge device Download PDFInfo
- Publication number
- US2109984A US2109984A US106613A US10661336A US2109984A US 2109984 A US2109984 A US 2109984A US 106613 A US106613 A US 106613A US 10661336 A US10661336 A US 10661336A US 2109984 A US2109984 A US 2109984A
- Authority
- US
- United States
- Prior art keywords
- container
- coating
- electric discharge
- discharge device
- applying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011248 coating agent Substances 0.000 description 24
- 238000000576 coating method Methods 0.000 description 24
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 16
- 239000000463 material Substances 0.000 description 15
- 239000011230 binding agent Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 235000010338 boric acid Nutrition 0.000 description 6
- 235000011007 phosphoric acid Nutrition 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000001464 adherent effect Effects 0.000 description 4
- 150000003016 phosphoric acids Chemical class 0.000 description 4
- 239000006188 syrup Substances 0.000 description 4
- 235000020357 syrup Nutrition 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- YZYDPPZYDIRSJT-UHFFFAOYSA-K boron phosphate Chemical compound [B+3].[O-]P([O-])([O-])=O YZYDPPZYDIRSJT-UHFFFAOYSA-K 0.000 description 2
- 229910000149 boron phosphate Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012047 saturated solution Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 244000182067 Fraxinus ornus Species 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/02—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
Definitions
- My invention relates to the manufacture of electric discharge devices and more particularly to electric discharge devices comprising a container having on the inner surface thereof a coating of luminescent material, such as a fluorescent powder. Still more particularly, my invention relates to binding agents for causing the luminescent material to adhere to the surface 'of the container and to a method of applying such binding agents.
- a mixture of boric and phosphoric acids is dissolved in a volatilizable solvent, preferably acetone.
- a volatilizable solvent preferably acetone.
- This material is applied to the inner surface of the container, the solvent is evaporated, and after the binder has become tacky, the luminescent powder is The container is then heated to about 450 C. to fuse the binder to form a glaze containing boron phosphate.
- a mixture which has given good results comprises 13.9 cc. of a saturated solution of H3303 (boric acid) in absolute CHaDH (methyl alcohol) which is diluted to about cc. with acetone. To this is added 3.23 cc. of per cent HaPOi syrup (phosphoric acid) having a specific gravity of 1.71, and the mixture is diluted to 0'0. with acetone. The mixture may be filtered if necessary to remove any insoluble residue. This material is poured into the container and after the surface thereof has been thoroughly moistened, the excess material is poured back into the supply vessel. The solvent (acetone) is then evaporated either by means of a gentle stream of air or by spontaneous drying, the container being held vertically.
- the container is allowed to stand at room temperature until the surface of the binder possesses the proper tacky condition. Then the luminescent powder, such as cadmium or zinc silicate for example, is dusted into the container over the surface of the binder. Where the container is tubular and open at both ends, this may be done by setting the container at an angle of about thirty to sixty degrees with a clean receptacle at the lower end thereof and pouring the powder in at the top while the container is being rotated. The ends of the container may then be reversed and the operation repeated. The container may then be held vertically and jarred at the ends to remove the excess powder. The glass container is then fired at about 450 C. for approximately fifteen minutes to drive out any remaining volatilizable ingredients and to form a glaze which contains boron phosphate and which is very adherent.
- the luminescent powder such as cadmium or zinc silicate for example
- the above described method may be used for applying the luminescent coating to gaseous discharge lamps of the positive column type such as shown in the United States application Serial No. 75,772, G. E. Inman, filed April 22, 1936, which contain electrodes and a starting gas such as argon and a small quantity of mercury.
- the luminescent material transforms invisible radiations in the lamp to visible light to complement the visible spectrum of the light emitted by the gaseousatmosphere and to supplement the in tensity of the visible light.
- Such a. binder may comprise 22.5 cc. of eighty-five per cent HaPOr syrup (specific gravity 1.71), 30.6 grams of H330: crystals dissolved in cc. of absolute methyl alcohol. This binder requires rapid drying with a properly directed stream of hot air.
- An electric discharge "device comprising a container having electrodes sealed therein, a coating on the inner surface of said container consisting substantially entirely of a mixture of the fused oxides of boron and phosphorous and finely divided luminescent material adherent to said coating.
- a process for applying luminescent material to the interior of the container of an electric discharge device which comprises applying to the inner surface of said container a coating comprising a solution of boric and phosphoric acids, applying particles of luminescent material to said coating and heating said container to convert said coating to a glaze having said luminescent particles adherent thereto.
- a process for applying luminescent material to the interior of the container of an electric discharge device which comprises applying to the inner surface of said container a coating com prising a mixture of boric and phosphoric acids and a solvent, drying said coating to cause said 7 solvent to be evaporated and to causesaid coating to become tacky, applying. particles oflumines 4.
- Aprocess forapplyin'g luminescent material to the interior, of the container of electric dischargevdevice which comprises applying to the. inner surface oi said container a coating comprisin'g amiigture of.
- boricand phosphOric acids the inner surface of ,said container a coating consisting byvolume of a mixture of approxiand acetone, .dry1ng saidcoatingi to cause said acetone to be evaporatedland to cause's'aid coating to become tacky,,i'applying' particles ofe lu minescent material to said coating andlieatingsaid container to convert. said coating to 'aglaze having said luminescentflparticles adherent-thereto.
- a process for applying luminescent material to the interior of the container of an electric discharge device which comprises applying to phoric acid syrup and eighty-three per cent of acetone, dryingjs aid coating tocausesaidacetOne to be evaporated anwto causesaid coating to jbec'orne 'taclry,- a-pplying particles of luminescent inate'rial to' said coating and heating said containe f to convert said coating to agla'ze'havin'g said luminescent particlesadlierent thereto I JOHDlOl
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Luminescent Compositions (AREA)
Description
, dusted thereon.
Patented Mar. 1, 1938 PATENT OFFICE ELECTRIC DISCHARGE DEVICE John 0. Aicher, East Cleveland, Ohio, aasignor to General Electric Company, a corporation of New York No Drawing. Application October Serial No. 106,613
8 Claims.
My invention relates to the manufacture of electric discharge devices and more particularly to electric discharge devices comprising a container having on the inner surface thereof a coating of luminescent material, such as a fluorescent powder. Still more particularly, my invention relates to binding agents for causing the luminescent material to adhere to the surface 'of the container and to a method of applying such binding agents.
According to my invention, a mixture of boric and phosphoric acids is dissolved in a volatilizable solvent, preferably acetone. This material is applied to the inner surface of the container, the solvent is evaporated, and after the binder has become tacky, the luminescent powder is The container is then heated to about 450 C. to fuse the binder to form a glaze containing boron phosphate.
A mixture which has given good results comprises 13.9 cc. of a saturated solution of H3303 (boric acid) in absolute CHaDH (methyl alcohol) which is diluted to about cc. with acetone. To this is added 3.23 cc. of per cent HaPOi syrup (phosphoric acid) having a specific gravity of 1.71, and the mixture is diluted to 0'0. with acetone. The mixture may be filtered if necessary to remove any insoluble residue. This material is poured into the container and after the surface thereof has been thoroughly moistened, the excess material is poured back into the supply vessel. The solvent (acetone) is then evaporated either by means of a gentle stream of air or by spontaneous drying, the container being held vertically. The container is allowed to stand at room temperature until the surface of the binder possesses the proper tacky condition. Then the luminescent powder, such as cadmium or zinc silicate for example, is dusted into the container over the surface of the binder. Where the container is tubular and open at both ends, this may be done by setting the container at an angle of about thirty to sixty degrees with a clean receptacle at the lower end thereof and pouring the powder in at the top while the container is being rotated. The ends of the container may then be reversed and the operation repeated. The container may then be held vertically and jarred at the ends to remove the excess powder. The glass container is then fired at about 450 C. for approximately fifteen minutes to drive out any remaining volatilizable ingredients and to form a glaze which contains boron phosphate and which is very adherent.
The above described method may be used for applying the luminescent coating to gaseous discharge lamps of the positive column type such as shown in the United States application Serial No. 75,772, G. E. Inman, filed April 22, 1936, which contain electrodes and a starting gas such as argon and a small quantity of mercury. The luminescent material transforms invisible radiations in the lamp to visible light to complement the visible spectrum of the light emitted by the gaseousatmosphere and to supplement the in tensity of the visible light.
One of the advantages of my binder over others heretofore suggested, such as a mixture of boric acid and glycerin, is that it is not necessary to employ a sponge saturated with the binder in order to apply a thin uniform coating of the binder to the container. Another advantage is that the powder adheres better and it is not necessary to employ so fine a powder. Thus, it is possible to use many fluorescent materials as they are made, whereas prior methods necessitated a laborious and costly process for obtaining certain definite particle sizes in order to obtain a reasonable degree of adherence.
Where it is permissible to use a rapid drying hinder, the acetone may be omitted. Such a. binder may comprise 22.5 cc. of eighty-five per cent HaPOr syrup (specific gravity 1.71), 30.6 grams of H330: crystals dissolved in cc. of absolute methyl alcohol. This binder requires rapid drying with a properly directed stream of hot air.
What I claim as new and desire to secure by Letters Patent of the United States is:
1. An electric discharge "device comprising a container having electrodes sealed therein, a coating on the inner surface of said container consisting substantially entirely of a mixture of the fused oxides of boron and phosphorous and finely divided luminescent material adherent to said coating.
2. A process for applying luminescent material to the interior of the container of an electric discharge device which comprises applying to the inner surface of said container a coating comprising a solution of boric and phosphoric acids, applying particles of luminescent material to said coating and heating said container to convert said coating to a glaze having said luminescent particles adherent thereto.
3. A process for applying luminescent material to the interior of the container of an electric discharge device which comprises applying to the inner surface of said container a coating com prising a mixture of boric and phosphoric acids and a solvent, drying said coating to cause said 7 solvent to be evaporated and to causesaid coating to become tacky, applying. particles oflumines 4. Aprocess forapplyin'g luminescent material to the interior, of the container of electric dischargevdevicewhich comprises applying to the. inner surface oi said container a coating comprisin'g amiigture of. boricand phosphOric acids the inner surface of ,said container a coating consisting byvolume of a mixture of approxiand acetone, .dry1ng saidcoatingi to cause said acetone to be evaporatedland to cause's'aid coating to become tacky,,i'applying' particles ofe lu minescent material to said coating andlieatingsaid container to convert. said coating to 'aglaze having said luminescentflparticles adherent-thereto.
5. A process for applyingfluminesce nt materia1 to the interior of the containero'fan electric:
discharge device which comprises applying to the inner surface of said container a coating cons'isting by volume of a mixture of approximately fourteen per cent of a saturated solution of boric acid in alcohol, three per cent of phosphoric acid syrup and eighty-three per cent of a solvent, drying saidcoating to cause said solvent to be evaporated and to' cause said coating to become tacky, applying particles of luminescent material to said coating and heating said container to convert said coating to a glaze having said luminescent particles adherent thereto. I 6. A process for applying luminescent material to the interior of the container of an electric discharge device which comprises applying to phoric acid syrup and eighty-three per cent of acetone, dryingjs aid coating tocausesaidacetOne to be evaporated anwto causesaid coating to jbec'orne 'taclry,- a-pplying particles of luminescent inate'rial to' said coating and heating said containe f to convert said coating to agla'ze'havin'g said luminescent particlesadlierent thereto I JOHDlOl
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US106613A US2109984A (en) | 1936-10-20 | 1936-10-20 | Electric discharge device |
| GB27587/37A GB487019A (en) | 1936-10-20 | 1937-10-11 | Improvements in and relating to electric discharge devices |
| FR828067D FR828067A (en) | 1936-10-20 | 1937-10-20 | Improvements to discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US106613A US2109984A (en) | 1936-10-20 | 1936-10-20 | Electric discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2109984A true US2109984A (en) | 1938-03-01 |
Family
ID=22312348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US106613A Expired - Lifetime US2109984A (en) | 1936-10-20 | 1936-10-20 | Electric discharge device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2109984A (en) |
| FR (1) | FR828067A (en) |
| GB (1) | GB487019A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2423626A (en) * | 1944-05-20 | 1947-07-08 | Rauland Corp | Method of manufacturing screens in cathode-ray tubes |
| US2706691A (en) * | 1949-05-18 | 1955-04-19 | Osram G M B H Kommanditgesells | Method of coating glass bulbs |
| US4231892A (en) * | 1979-03-05 | 1980-11-04 | International Business Machines Corporation | Manganese doped zinc silicate luminescent phosphors with III-V oxide substitutions |
| US4950948A (en) * | 1988-11-07 | 1990-08-21 | Gte Laboratories Incorporated | Manganese activated zinc silicate phosphor |
| US5188763A (en) * | 1986-08-29 | 1993-02-23 | Gte Products Corporation | Method for preparing zinc orthosilicate phosphor |
| US5196234A (en) * | 1986-08-29 | 1993-03-23 | Gte Products Corporation | Method for preparing zinc orthosilicate phosphor particle |
-
1936
- 1936-10-20 US US106613A patent/US2109984A/en not_active Expired - Lifetime
-
1937
- 1937-10-11 GB GB27587/37A patent/GB487019A/en not_active Expired
- 1937-10-20 FR FR828067D patent/FR828067A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2423626A (en) * | 1944-05-20 | 1947-07-08 | Rauland Corp | Method of manufacturing screens in cathode-ray tubes |
| US2706691A (en) * | 1949-05-18 | 1955-04-19 | Osram G M B H Kommanditgesells | Method of coating glass bulbs |
| US4231892A (en) * | 1979-03-05 | 1980-11-04 | International Business Machines Corporation | Manganese doped zinc silicate luminescent phosphors with III-V oxide substitutions |
| US5188763A (en) * | 1986-08-29 | 1993-02-23 | Gte Products Corporation | Method for preparing zinc orthosilicate phosphor |
| US5196234A (en) * | 1986-08-29 | 1993-03-23 | Gte Products Corporation | Method for preparing zinc orthosilicate phosphor particle |
| US4950948A (en) * | 1988-11-07 | 1990-08-21 | Gte Laboratories Incorporated | Manganese activated zinc silicate phosphor |
Also Published As
| Publication number | Publication date |
|---|---|
| GB487019A (en) | 1938-06-14 |
| FR828067A (en) | 1938-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2461878A (en) | Metallizing composition | |
| US2451590A (en) | Process of forming a luminescent screen | |
| US2151496A (en) | Luminescent discharge lamp and coating therefor | |
| US2109984A (en) | Electric discharge device | |
| US2298968A (en) | Fluorescent coating and method of manufacture | |
| US2344081A (en) | Process for causing luminescent substances to adhere to glass walls | |
| US3316109A (en) | Coating composition | |
| US2267255A (en) | Coloring material | |
| US2331306A (en) | Luminescent coating for electric lamps | |
| US5200233A (en) | Method of applying phosphor particles to surfaces | |
| US2278742A (en) | Method of forming luminescent screens | |
| US2709766A (en) | Fluorescent lamp | |
| US2311513A (en) | Method of applying luminescent coating | |
| US3533827A (en) | Method for phosphor coating and phosphor-coated substrate | |
| US2219899A (en) | Binder for making luminescent screens | |
| US2123939A (en) | Method of applying luminescent colors on bodies consisting of glass or other material | |
| US2707687A (en) | Method of forming luminescent coating | |
| US3339100A (en) | Fluorescent electric discharge lamp having the phosphor particles admixed with indium powder particles | |
| US2179453A (en) | Binder and coating materials and method of producing the same | |
| US2094630A (en) | Vitreous body for electric discharge devices | |
| US2726966A (en) | Fluorescent coating method | |
| US2030439A (en) | Manufacture of fabricated glass articles | |
| GB626357A (en) | Improvements in or relating to methods of forming metal coatings on bases of ceramic, refractory or high melting point vitreous material | |
| USRE20909E (en) | Discharge tube | |
| US2030963A (en) | Discharge tube |